1.

The circumference of a circle exceeds thediameter by 33.6 cm. Find the area of the circle.

Answer»

thanks for raising the doubt

C = D + 33.6C = 2πrD= 2r∴ 2πr = 2r +33.6⇒2r(π -1) = 33.6⇒2r(15/7) =33.6⇒r = (33.6×7)/30⇒r = 7.84∴circumference, 2πr = 2×(22/7)×7.84 = 49.28cm



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